| Adam Gregg | Agribusiness Assn. of IA | Supporting | GA83 |
| Jerry Fitzgerald | Agribusiness Assn. of IA | Supporting | GA83 |
| Larry Murphy | Agribusiness Assn. of IA | Supporting | GA83 |
| Maggie Smith-Fitzgerald | Agribusiness Assn. of IA | Supporting | GA83 |
| Marc Beltrame | Agribusiness Assn. of IA | Supporting | GA83 |
| Mark Joyce | Agribusiness Assn. of IA | Supporting | GA83 |
| Mark Reisinger | Agribusiness Assn. of IA | Supporting | GA83 |
| Nicole Woodroffe | Annett Holdings | Undecided | GA83 |
| Robert Weiser | Annett Holdings | Undecided | GA83 |
| Brad Epperly | BNSF Railway Co. | Opposing | GA83 |
| Brad Epperly | BNSF Railway Co. | Undecided | GA83 |
| James West | BNSF Railway Co. | Opposing | GA83 |
| James West | BNSF Railway Co. | Undecided | GA83 |
| Keith Luchtel | BNSF Railway Co. | Opposing | GA83 |
| Keith Luchtel | BNSF Railway Co. | Undecided | GA83 |
| Paula Dierenfeld | BNSF Railway Co. | Opposing | GA83 |
| Paula Dierenfeld | BNSF Railway Co. | Undecided | GA83 |
| Scott Sundstrom | BNSF Railway Co. | Opposing | GA83 |
| Scott Sundstrom | BNSF Railway Co. | Undecided | GA83 |
| Nicole Woodroffe | CRST International | Undecided | GA83 |
| Robert Weiser | CRST International | Undecided | GA83 |
| Brad Epperly | IA. Automobile Dealers Assn. | Undecided | GA83 |
| James West | IA. Automobile Dealers Assn. | Undecided | GA83 |
| Keith Luchtel | IA. Automobile Dealers Assn. | Undecided | GA83 |
| Paula Dierenfeld | IA. Automobile Dealers Assn. | Undecided | GA83 |
| Scott Sundstrom | IA. Automobile Dealers Assn. | Undecided | GA83 |
| Jerry Fitzgerald | IA. Corn Growers Assn.(ICG) | Supporting | GA83 |
| Maggie Smith-Fitzgerald | IA. Corn Growers Assn.(ICG) | Supporting | GA83 |
| Mark Joyce | IA. Corn Growers Assn.(ICG) | Supporting | GA83 |
| Mindy Poldberg | IA. Corn Growers Assn.(ICG) | Supporting | GA83 |
| Elizabeth Baird | IA. Dept. of Transportation | Opposing | GA83 |
| Don Petersen | IA. Farm Bureau Federation | Undecided | GA83 |
| Joe Johnson | IA. Farm Bureau Federation | Undecided | GA83 |
| Mark Salvador | IA. Farm Bureau Federation | Undecided | GA83 |
| Drue Sander | IA. Institute for Cooperatives | Supporting | GA83 |
| Kayla Lyon | IA. Institute for Cooperatives | Supporting | GA83 |
| Brad Epperly | IA. Propane Gas Assn. | Undecided | GA83 |
| James West | IA. Propane Gas Assn. | Undecided | GA83 |
| Keith Luchtel | IA. Propane Gas Assn. | Undecided | GA83 |
| Paula Dierenfeld | IA. Propane Gas Assn. | Undecided | GA83 |
| Scott Sundstrom | IA. Propane Gas Assn. | Undecided | GA83 |
| Jim Obradovich | IA. Shortline and Regional Railroad Assn. | Opposing | GA83 |
| Jill Altringer | IA. Soybean Assn. | Supporting | GA83 |
| Hanna DeGroot | IA. State Assn. of Counties | Supporting | GA83 |
| Linda Hinton | IA. State Assn. of Counties | Supporting | GA83 |
| MaryBeth Mellick | IA. State Assn. of Counties | Supporting | GA83 |
| Nathan Bonnett | IA. State Assn. of Counties | Supporting | GA83 |
| William Peterson | IA. State Assn. of Counties | Supporting | GA83 |
| Brad Hudson | IA. State Education Assn. | Undecided | GA83 |
| Jon Studer | IA. State Education Assn. | Undecided | GA83 |
| Gary Grant | Linn County Board of Supervisors | Undecided | GA83 |
| Larry Murphy | Linn County Board of Supervisors | Undecided | GA83 |
| David Tierney | Monsanto Company | Supporting | GA83 |
| Michael Naig | Monsanto Company | Supporting | GA83 |
| Cal Hultman | Union Pacific Railroad | Opposing | GA83 |
| Michael Triplett | Union Pacific Railroad | Opposing | GA83 |